Expansion of Universe
Journal Title: IOSR Journal of Applied Physics (IOSR-JAP) - Year 2018, Vol 10, Issue 2
Abstract
The origin of matter remains one of the great mysteries in physics. During the last two decades, cosmology has become a precision observational science thanks (in part) to the incredible number of experiments performed to better understand the composition of the universe. The large amount of data accumulated strongly indicates that the bulk of the universe’s matter is in the form of nonbaryonic matter that does not interact electromagnetically. Combined evidence from the dynamics of galaxies and galaxy clusters confirms that most of the mass in the universe is not composed of any known form of matter. Measurements of the cosmic microwave background, big bang nucleosynthesis and many other experiments indicate that ∼ 80% of the matter in the universe is dark, non-relativistic and cold. The dark matter resides in the holes surrounding galaxies, galaxy clusters and other large-scale structures.
Authors and Affiliations
Nidhi Varshney,, Raghav Maheshwari, Nikhil Parihar
Keywords
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